8220862668 has 12 divisors (see below), whose sum is σ = 19182012920. Its totient is φ = 2740287552.

The previous prime is 8220862631. The next prime is 8220862673. The reversal of 8220862668 is 8662680228.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×8220862668² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342535933 + ... + 342535956.

Almost surely, 2^8220862668 is an apocalyptic number.

It is an amenable number.

8220862668 is an abundant number, since it is smaller than the sum of its proper divisors (10961150252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8220862668 is a wasteful number, since it uses less digits than its factorization.

8220862668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685071896 (or 685071894 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The square root of 8220862668 is about 90668.9730172345. The cubic root of 8220862668 is about 2018.2383972001.

The spelling of 8220862668 in words is "eight billion, two hundred twenty million, eight hundred sixty-two thousand, six hundred sixty-eight".